76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2019 MediaTek Inc.
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*/
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#include "tpd.h"
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/* #ifdef TPD_HAVE_CALIBRATION */
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/* #ifndef TPD_CUSTOM_CALIBRATION */
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/* #if (defined(TPD_WARP_START) && defined(TPD_WARP_END)) */
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/* #define TPD_DO_WARP */
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int TPD_DO_WARP;
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int tpd_wb_start[TPD_WARP_CNT] = { 0 };
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int tpd_wb_end[TPD_WARP_CNT] = { 0 };
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void tpd_warp_calibrate(int *x, int *y)
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{
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int wx = *x, wy = *y;
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if (wx < tpd_wb_start[0] && tpd_wb_start[0] > 0) {
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wx = tpd_wb_start[0] -
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((tpd_wb_start[0] - wx) *
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(tpd_wb_start[0] - tpd_wb_end[0]) /
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(tpd_wb_start[0]));
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} else if (wx > tpd_wb_start[2])
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wx = (wx - tpd_wb_start[2]) *
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(tpd_wb_end[2] - tpd_wb_start[2]) /
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(TPD_RES_X - tpd_wb_start[2]) +
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tpd_wb_start[2];
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if (wy < tpd_wb_start[1] && tpd_wb_start[1] > 0)
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wy = tpd_wb_start[1] -
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((tpd_wb_start[1] - wy) *
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(tpd_wb_start[1] - tpd_wb_end[1]) /
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tpd_wb_start[1]);
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else if (wy > tpd_wb_start[3] && wy <= TPD_RES_Y)
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wy = (wy - tpd_wb_start[3]) *
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(tpd_wb_end[3] - tpd_wb_start[3]) /
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(TPD_RES_Y - tpd_wb_start[3]) +
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tpd_wb_start[3];
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if (wy < 0)
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wy = 0;
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if (wx < 0)
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wx = 0;
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*x = wx, *y = wy;
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}
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/* #else */
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/* #define tpd_warp_calibrate(x,y) */
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/* #endif */
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void tpd_calibrate(int *x, int *y)
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{
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int tx, i;
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if (tpd_calmat[0] == 0)
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for (i = 0; i < 6; i++)
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tpd_calmat[i] = tpd_def_calmat[i];
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/* ================ calibrating ================ */
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tx = ((tpd_calmat[0] * (*x)) +
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(tpd_calmat[1] * (*y)) + (tpd_calmat[2])) >> 12;
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*y = ((tpd_calmat[3] * (*x)) +
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(tpd_calmat[4] * (*y)) + (tpd_calmat[5])) >> 12;
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*x = tx;
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if (TPD_DO_WARP == 1)
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tpd_warp_calibrate(x, y);
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*x = (*x) + ((*y) * (*x) * tpd_calmat[6] / TPD_RES_X) / TPD_RES_Y;
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*y = (*y) + ((*y) * (*x) * tpd_calmat[7] / TPD_RES_X) / TPD_RES_Y;
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}
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/* #endif */
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/* #endif */
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